DESCRIPTION:(from UPN's press release) After losing everything in Hurricane Katrina, sisters Arin and Alexis Jones, both students at LSU, have selflessly devoted themselves to supporting their family and rebuilding their lives, putting all of their own plans on hold, including Alexis' 21st birthday celebration. For all of the sacrifices, Arin, wanting to do something special for her baby sister, enlists the help of hosts Kristin Cavallari and Ethan Erickson to plan the ultimate surprise party in Las Vegas that her sister has always dreamed of, on the premiere of the new reality series GET THIS PARTY STARTED, Tuesday, Feb. 7 (9:00-10:00 PM, ET/PT) on UPN. After arriving in Las Vegas, host Kristin joins Arin on an elaborate scheme to distract her sister Alexis from learning the truth. Meanwhile, the elite party planning team, led by special events coordinator Lara Shriftman and host Ethan go to great lengths to create the most incredible 21st birthday for Alexis, including a surprise appearance by Grammy Award-winning artists Mary Mary. UPN cameras capture the drama, emotion and excitement, as well-deserving people are surprised with very spectacular and extravagant events in their honor. Each week an elite team of party planners to the stars, led by special events coordinator Lara Shriftman of Harrison & Shriftman, along with hosts Kristin Cavallari and Ethan Erickson, work with one special individual's friends and family to make this vision come to life. Honoring every aspect of life's celebrations, including birthdays, engagements, weddings, and the like, everyday people who have sacrificed for their loved ones, suffered a tragedy, or have hit a milestone in their lives are given the VIP treatment as they are thrown the ultimate bash never to be forgotten. Filled with unexpected twists and turns, these individuals share their incredible stories as they are treated to a variety of life-changing surprises and gifts. From the hottest clubs, celebrity guests, and trendiest style-makers all over the country, nothing is spared to make these dreams come true.